Feasibility and Design Study for the Production and Monitoring of Synthetic Acid Fogs and Aerosols

摘要

A feasibility and design study to produce and monitor synthetic acid fogs and aerosols for human, animal, vegetation, and material exposure studies was conducted. Available data on the chemical and physical properties of California fogs and aerosols were reviewed to determine the observed ranges of chemical composition, droplet size and liquid water content of fogs. The physical and chemical interactions which take place during fog events are discussed. A preliminary design for a portable system to produce, deliver, and monitor acidic fogs and aerosols in exposure chambers under controlled conditions was developed after a review of generation and monitoring methods to simulate and characterize acidic fogs and aerosols. Nine major exposure facilities were surveyed to determine their capability for conducting fog effects research with the system. Recommendations are made for: relevant sets of chemical and physical characteristics for exposure fogs and aerosols; specific fog/aerosol generation, delivery and monitoring equipment; and exposure facilities at which effect studies using the equipment could be conducted.